I guess, someone overlooked this one in howto. (it is
proper in trunk. That particular line is removed).
diff --git a/Doc/howto/unicode.rst b/Doc/howto/unicode.rst
index 819427d..59ea825 100644
--- a/Doc/howto/unicode.rst
+++ b/Doc/howto/unicode.rst
@@ -150,7 +150,7 @@
 are more efficient and convenient.
 
 Encodings don't have to handle every possible Unicode character, and most
-encodings don't.  For example, Python's default encoding is the 'ascii'
+encodings don't.  For example, Python's default encoding is the 'UTF-8'
 encoding.  The rules for converting a Unicode string into the ASCII encoding are
 simple; for each code point: